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Hitunglah nilai dari: a.

Hitunglah nilai dari:

a. begin mathsize 14px style sin space 30 degree plus sin space 45 degree plus sin space 60 degree end style

  1. begin mathsize 14px style horizontal ellipsis end style 

  2. begin mathsize 14px style horizontal ellipsis end style 

Jawaban:

Karena begin mathsize 14px style sin space 30 degree equals 1 half end stylebegin mathsize 14px style sin space 45 degree equals 1 half square root of 2 end style, dan begin mathsize 14px style sin space 60 degree equals 1 half square root of 3 end style maka

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell sin space 30 degree plus sin space 45 degree plus sin space 60 degree end cell equals cell 1 half plus 1 half square root of 2 plus 1 half square root of 3 end cell row blank equals cell 1 half open parentheses 1 plus square root of 2 plus square root of 3 close parentheses end cell end table end style

Dengan demikian, 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row blank blank sin end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank space end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 30 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank degree end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank plus end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank sin end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank space end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 45 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank degree end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank plus end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank sin end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank space end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 60 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank degree end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell 1 half end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell open parentheses 1 plus square root of 2 plus square root of 3 close parentheses end cell end table end style.

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